S20.129A Blister (nonthermal) of breast, unspecified breast, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S20.129 with 7th character A (initial encounter).

Applies from S20 Superficial injury of thorax

7th character note

• The appropriate 7th character is to be added to each code from category S20

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Nearby codes

• S20.122 Blister (nonthermal) of breast, left breast
• S20.122A Blister (nonthermal) of breast, left breast, initial encounter
• S20.122D Blister (nonthermal) of breast, left breast, subsequent encounter
• S20.122S Blister (nonthermal) of breast, left breast, sequela
• S20.129 Blister (nonthermal) of breast, unspecified breast
• S20.129A Blister (nonthermal) of breast, unspecified breast, initial encounter (this code)
• S20.129D Blister (nonthermal) of breast, unspecified breast, subsequent encounter
• S20.129S Blister (nonthermal) of breast, unspecified breast, sequela
• S20.14 External constriction of part of breast
• S20.141 External constriction of part of breast, right breast
• S20.141A External constriction of part of breast, right breast, initial encounter